Eddy Current Laminated Core Transformer

Why the core of transformer is made up of laminated core. A transformer core is laminated to a reduce hysteresis loss b reduce eddy current losses c reduce copper losses d reduce all above losses. The result of all this insulation is that the unwanted induced eddy current power loss in the core is greatly reduced and it is for this reason why the magnetic iron circuit of every transformer and other electro magnetic machines are all laminated.

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So at higher frequencies the eddy current loss is very high.

Eddy current laminated core transformer.

Iit can be reduced by making core with a thin laminated sheets and dipping in varnish for more insulation. In an ac transformer using thin sheets of iron coated with lacquer and glued together can minimize loss caused by eddy currents that would flow in a solid iron core. Joe clasen 48 561 views. The sum of individual eddy current of the laminations are very less compared to that of using single solid iron core.

Each lamination sheet will have an eddy current circulates within it. The transformer core made from e and i lamination transformer core made from e and i lamination eddy currents are generated in a transformer core which heats the core and causes losses by altering the current. The eddy current loss is proportional to f 2. The core is made from e and i lamination.

The resistivity of the steel sheet itself is high reducing the eddy current losses by making the laminations very thin. Using laminations in a transformer construction reduces eddy current losses. So that resostance increase to resist circulating current. A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical electromechanical and magnetic devices such as electromagnets transformers electric motors generators inductors magnetic recording heads and magnetic assemblies it is made of ferromagnetic metal such as iron or ferrimagnetic compounds such as ferrites.

Intro to eddy current theory duration. So it is the current which circulates in iron core of the traffo. The central iron core is constructed from of a highly permeable material made from thin silicon steel laminations assembled together to provide the required magnetic path with the minimum of losses. If the core is one component its size is wide and thus small which reduces losses due to a greater current.

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